Akashic Guitar effects PCB lookup
DEPTHVOLRATE

1590B · 3 knobs

Fuzz Dog· Pecker

Little Pecker Trem

Based on the Hummingbird / Vox Repeat Percussion

Category
Tremolo· Delay/Mod/Filter
Controls
Depth · Vol · Rate
Difficulty
Medium
Price
£34.80
Tags
delay-mod-filter

From the vendor

Instant Spacemen 3! Just add fuzz and wah. This choppy little chap is a modern take on the original Vox Repeat Percussion effect - a pretty extreme 60s sawtooth tremolo. The magic bean in that circuit is getting scarce and pricey, but fortunately this circuit does exactly the same thing, and then some, with readily available parts. Controls are pretty self explanatory. Volume, Rate and Depth. There's also a toggle switch to give you three different rate ranges so you can fine tune things nicely. The circuit is fronted by a FET buffer which will boost your signal level if you want to give it some. We've added an internal trimmer so you can tweak the magic ingredients. The original VRP could suffer from quite pronounced ticking if it wasn't tuned just right. The trimmer in here let's you do just that. Find the balance of 'chop' to 'tick' you're happy with and box it up. If you want the PCB without parts there's a link for that at the bottom of the page. Partial kit: PCB, all board-mounted components, pots. Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED. Enclosure (pre-drilled) is available as an option with full kits, and can take a battery if desired with footswitch positioned 22mm higher, closer to the controls. Knobs are not included. Inspired by: Hummingbird / Vox Repeat Percussion Difficulty: Medium PCB size: 50 x 33mm Knobs required: 3 Enclosure: 1590B Direct-Connect compatible (4-way) If you want the kit pre-built you must add the enclosure option below and select your knobs in the Components section. Check Specials for powder-coated enclosure availability. Download the INSTRUCTION PDF

Schematic

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 28 rows

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RefValueNormalizedTypeNotes
Resistors 11
R147K47k
R22K22.2k
R31M1M
R447K47k
R5220K220k
R622K22k
R712K12k
R827K27k
R9470R470
R102K22.2k
R11470R470
Capacitors 10
C1220n220n
C210u10uElectrolytic capacitor
C32u22.2uElectrolytic capacitor
C4100u100uElectrolytic capacitor
C54u74.7uElectrolytic capacitor
C62u22.2uElectrolytic capacitor
C7100u100uElectrolytic capacitor
C81u1uElectrolytic capacitor
C91u1uElectrolytic capacitor
C101u1u
Diodes 1
D11N40011N4001
Transistors 3
Q12N5457*2N5457
Q22N50892N5089
Q32N60272N6027
Potentiometers 3
DEPTH10KBB10k
VOL100KBB100k
RATE100KBB100k